446 FAMILY XI. STAPHYLINIDJ5. 



852 (2620). TACHIXI s LURIDVS Erichs., Gen. Spec. Staph., 1840, 920. 



Head black : legs, sides of thorax, basal two-thirds, sides and tip of 

 elytra dull yellow : antenme reddish-brown, the four basal joints paler ; un- 

 der surface and abdomen piceous. Head and thorax minutely alutaceous, 

 very finely and indistinctly punctate. Elytra together one-third longer than 

 wide, more distinctly alutaceous. sparsely and finely punctate. Abdomen 

 punctured as elytra, almost smooth beneath. Length 5-5.6 mm. 



Laporte County: rare. May 7. 



sr,.", (2621). TACIIIM s FI.MMUIATUS Grav.. Mem. Col. Micr., 1806, 191. 



Head and thorax black, shining; elytra pale chestnut brown, tip nar- 

 rowly piceoiis ; antenna' black, four basal joints and the last one pale; ab- 

 domen, under surface and legs piceous. Head and thorax finely alutaceous, 

 minutely punctate. Elytra together as wide as long, minutely alutaceous, 

 rather coarsely and irregularly pum-iale, some of the punctures in evident 

 rows. Abdomen shining, sparsely puuctulatc above, more coarsely beneath. 

 Length 7-9 rnin. 



Throughout the State; common. April 11-Odober 0. Occurs 

 in fleshy fungi. Our largest and broadest species. The first two 

 ventrals of both sexes are carinate between the hind coxes. 



T. picipes Erichs, uniform piceous, 7-8 mm. in length, occurs 

 from Canada to Virginia; T. schira-rzi Horn, also piceous and 8 mm. 

 in length, has been taken at Detroit and near Cincinnati; T. lim- 

 batus Melsh., 7-7.5 mm. in length, is known from the Middle States 

 and near Cincinnati. 



854 (2626). TACHINI'S PALLIPES Grav., Mon. Col. Micr., 1806, 20. 



Piceous black, shining ; legs, margin of thorax, base and sides of elytra 

 and four basal joints of antemue. reddish-yellow. Head and thorax finely 

 alutaceous, minutely and sparsely punctulate. Elytra slightly longer than 

 wide, finely but distinctly punctured, finely alutaceous. Abdomen more 

 finely punctured than elytra. Length 5-6 mm. 



Throughout the State; common. February 21-October 4. Oc- 

 curs beneath bark and on fungi. Also taken in numbers March 16 

 from beneath a mass of old honeycomb. 



T. circumcinctus Maid., piceous. elytra chestnut brown, length 

 4.5 mm., is a, boreal species recorded from Michigan and Kansas; 

 T. nitirftdoitlcx Horn, piceous with sides of thorax and tips of elytra, 

 paler, length 3 mm., is said to be found from Canada to Maryland, 

 and is reported from Cincinnati by Dury. 



LXIII. TACHYPORUS Grav. ISOfi. (Gr.. "swift. -\ to walk.") 



Shod, broad, convx species having the abdomen abruptly taper- 

 ing and besel with bristly hairs. The males have the front tarsi 

 distinctly dilated, the sixth ventral triangularly notched and the 



